---
title: showHideButtonIdentifier
framework: appkit
role: symbol
role_heading: Type Property
path: appkit/nsoutlineview/showhidebuttonidentifier
---

# showHideButtonIdentifier

The Show/Hide button.

## Declaration

```swift
class let showHideButtonIdentifier: NSUserInterfaceItemIdentifier
```

## See Also

### Constants

- [disclosureButtonIdentifier](appkit/nsoutlineview/disclosurebuttonidentifier.md)